binomial coefficient

binomial coefficient

[bī′nō·mē·əl kō·ə′fish·ənt]

(mathematics)

A coefficient in the expansion of (x + y)n, where n is a positive integer; the (k + 1)st coefficient is equal to the number of ways of choosing k objects out of n without regard for order. Symbolized (nk); nCk ; C (n,k); Cnk.

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